[Dev-luatex] Potential race condition in makefiles

Hi, We are observing a following build failure: ../../../texk/web2c/luatexdir/luamd5/md5lib.c:197:10: fatal error: 'utilsha.h' file not found #include "utilsha.h" ^~~~~~~~~~~ 1 error generated. For the full log, see https://hydra.nixos.org/build/142527628/nixlog/2 Best regards, Dmitry